Take-up roll for automatic musical instruments.



MELVILLE CLARK, 0F CHICAGO, ILLINOIS.'

TAKE-UP ROLL FUR AUTOMATIC MUSICAL INSTRUMENTS.

Specification of Letters Patent.

Patented Nov. 28, 1911.

Application 'led October 22, 1910. Serial No. 588,408.

To all whom it may concern:

Be it known that I, MnLvILLn CLARK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Takedtlp Rolls for Automatic Musical Instruments, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide a vtake-up roll for the controlling sheet of an automatic musical instrument, which shall be adapted to serve that purpose for sheets of the several different Widths which are commonly employed,-to wit, for fiftyeightnotes, siXty-five notes and eighty-eight notes, respectivelyf-and Which shall also be adjustable to allow for slight expansion or contraction of the music sheets due t0 changes of moisture and temperatureof the atmosphere.

Figure 1 is an elevation of a roll embodying this invention, certain parts being shown in section. F ig. 2 is a section talren as indicated by line 2 2 on Fig. 1.

A is the shaft of the roll. It is provided `at one end With suitable means for driving engagement, and at the other end with means for centering it. This means may be in any of the customary forms. On 4the shaft occupying the `middle portion of its length there is a short section of the roll B, which is made fast to the shaft in any convenient manner, and is preferably integral therewith and has the customary button B1 for attaching the end of the controlling sheet. Mounted upon the shaft, at opposite sides of the middle portion B, there are end sections C, C, of the roll, having at their outer ends flanges D, D. These sectio-ns are slidable upon the shaft, which has feathers E, E, engaging the corresponding grooves D1 D1, in thesections C, C, for rotating them with the shaft. These feathers may be constructed in various Ways, but are preferably formed of heavy Wire, With ends bent into holes in the shaft, as shown in Fig. 1. A

For positioning the sections C, C, at va* rious points along the shaft to accommodate different widths of controlling sheets, the flat springs F, F, secured to the roll sections in their grooves D1, Dl', and bearing againstthe feathers E, E, are provided. These constitute frictional clutches, such that the movable sections C, C, can be set accurately to accommodate the various sizes of controlling sheets, even though their Widths may be slightl modified through changes of moisture an temperature of the atmosphere. F, F, upon the feathers may be var1ed as desired, by means of set screws G, G, shown in the flanges of the roll sections.

For prevent-ing any increase of distance between the flanges D, D, after they have p, been set for a given Width of sheet, 'and during the operation of the sheet-feeding mechanism, safety catches H, H are provided on each of them. These catches each comprise a dog pivoted to the flange, as shown at D3, and having one end, H1', sha ed for engaging the feather E at an ang e slightly less than 900. Any movement of the flange toward the end of the shaft then would tend -to increase this angle, with the well understood result of increasing the grip of the dog on the feather. A spring J presses the dog onto the feather E, and release is accomplished by pressure on the outer end H2 of the catch-lever H.

I claim 1. A take-up roll for automatic musical instruments comprising a shaft; a roll section slidably mounted thereon and provided with a flange at its outer end; a sprinU device carried by the rollsection for frictlonal engagement With the shaft; a dog mounted upon the flange for engaging the shaft to prevent movement of the roll section outward toward the end of the shaft; means for varying the pressure of the frictional :pring device, and means for releasing the 2. A take-up roll for automatic musical instruments comprising a shaft having a longitudinal feather; a' roll section mounted thereon provided with a flange at its outer end and having a groove embracing the feather; a dog pivoted on said flange for engaging the feather to prevent movement of the roll sect-ion outward toward the end gf the shaft, and means for releasing the 3. A take-up roll for automatic musical instruments comprising a shaft having a longitudinal feather; a roll section mounted thereon provided with a flange at its outer end and having a groove embracing the feather; a spring device secured to the roll section in the groove for frictioal engage- The pressure of the springs p ment with th feat-her; means for varying my hand, in the presence of two Witnesses, theV pressure of said. spring device; a og at Chsagmnos, this 20th day of @ctopvoted on said ange for engaging the ber, 1910.

feather and preventing movement of the MELVLLE CLARK. 5' roll Section outward, and means for relas- Witnesses:

mg the dog. ROBT. N. BURTON,

'In testimony'whereo', Ihave hereunto set JEAN ELLIOTT. 

